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01 Record

CVE-2020-10021

Out-of-bounds write in USB Mass Storage with unaligned sizes

HighPUBLISHEDCNA: zephyr
CNA base score8.1 CVSS v3.xCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
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02 Description

Out-of-bounds write in USB Mass Storage with unaligned sizes

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
0.41% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 34.9% of scored records. A rank, not a probability.
NVD base score
7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2020-05-11 22:26Z6 YR AGO
Last updated
2024-09-17 00:16Z2 YR AGO
Reserved
2020-03-03
Assigning CNA
zephyr
Record state
PUBLISHED
Severity
High (CVSS 8.1)
CNA CVSS vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Weaknesses
Data version
5.1
Document digest
c31442682487302319a5cfa8eaa2c38d5a91e0f26451c306064600eea729ab28

05 Affected products

VendorProductVersionsPlatforms
zephyrproject-rtoszephyr1.14.1 to < unspecified, 2.1.0 to < unspecified—

06 References